2024年职称英语考试《卫生类》考试共65题，分为单选题和多选题和判断题和计算题和简答题和不定项。小编每天为您准备了5道每日一练题目（附答案解析），一步一步陪你备考，每一次练习的成功，都会淋漓尽致的反映在分数上。一起加油前行。

1、Egypt Felled by Famine Even ancient Egypt\'s mighty pyramid builders were powerless in the face of the famine that helped bring down their civilization around 2180 BC. Now evidence gleaned from mud deposited by the River Nile suggests that a shift in climate thousands of kilometers to the south was ultimately to blame ａｎｄ　the same ｏｒworse could happen today. The ancient Egyptians depended on the Nile\'s annual floods to irrigate their crops. But any change in climate that pushed the African monsoons southwards out of Ethiopia would have diminished these floods. Dwindling rains in the Ethiopian highlands would have meant fewer plants to stablize the soil. When rain did fall it would have washed large amounts of soil into the Blue Nile ａｎｄ　into Egypt, along with sediment from the White Nile. The Blue Nile mud has a different isotope signature from that of the White Nile. So by analyzing isotope differences in mud deposited in the Nile Delta, Michael Krom of Leeds University worked out what proportion of sediment came from each branch of the river. Krom reasons that during periods of drought, the amount of the Blue Nile mud in the river would be relatively high. He found that one of these periods, from 4,500 to 4,200 years ago, immediately predates the fall of the Egypt\'s Old Kingdom. The weakened waters would have been catastrophic fｏｒthe Egyptians. " Changes that affect food supply don\'t have to be very large to have a ripple effect in societies," says Bill Ryan of the Lamont Doberty Earth Observatory in New York. "Similar events today could be even more devastating," says team member Daniel Stanley, a geoarchaeologist from the Smithsonian Institution in Washington, D C. " Anything humans do to shift the climate belts would have an even worse effect along the Nile system today because the populations have increased dramatically. " According to Krom, Egypt\'s Old Kingdom fell ____.【单选题】

A.immediately after a period of drought

B. immediately after a period of flood

C.just before a drought struck

D.just before a flood struck

正确答案:A

答案解析:A说的是：就在一个时期的干旱之后。第五段有这么一个句子：… one of these periods immediately predates the fall of the Egypt\'s Old Kingdom. 其中的一个时期…就发生在古埃及王国毁灭之前。可以看出，A应该是正确的答案。B：就在一个时期的水灾之后。C：就在遇到一次旱灾之前。D：就在遇到一次水灾之前。

2、Online Cancer Chat with a Safety NetCancer Research UK has launched an online chat forum fｏｒcancer patients to swap (变换) stories ａｎｄ　share experiences on how to cope with such a devastating disease.But Cancer Chat is a forum with a difference: it has an information safety net.This means that a Cancer Research UK team will keep a watching brief to ensure that patients are not subjected to rogue (劣等的) "cancer cures" ｏｒscientifically unsound information.Anyone can have access to the messages posted on Cancer Chat, but if people wish to post a message, they will need to register.ａｎｄ　Rebekah Gibbs, cancer patient ａｎｄ　star of TWs Casualty, has pledged her support fｏｒthe new project. "I think Cancer Chat is a brilliant idea," she said. "I have written a public diary about what I went through with breast cancer ａｎｄ　I have had such a heart - warming response from other people going through the same thing."The idea of a Cancer Chat forum means you can share information about treatment ａｎｄ　side effects ａｎｄ　you can really open up about your feelings online in a way that can be difficult when talking to close friends ａｎｄ　family. ａｎｄ　with Cancer Research UK monitoring the forum, people can be reassured about the quality of information being exchanged.Cancer Chat will also encourage its users to check out any cancer questions on its CancerHelp UK website, which is specially designed to give patients ａｎｄ　their families 6,000 pages of up - to - date information that is easy to understａｎｄ　ａｎｄ　explains a wide range of treatments fｏｒdifferent types of cancer ａｎｄ　gives details of clinical trials. There is also a UK ｄａｔａｂａｓｅ of cancer clinical trials.The award - winning website attracts around one million visitors a month ａｎｄ　Cancer Research UK hopes that some of these visitors will also want to post comments on the Cancer Chat forum.Fｏｒthose who do not have access to computers ａｎｄ　have questions about cancer, the charity\'s team of cancer information nurses are available during office hours to talk over patients\' concerns on the phone.Cancer Chat is different from other forums chiefly in that ______.【单选题】

A.it has the support of a famous actress

B.it provides a huge amount of data

C.it is a source of reliable information

D.it attracts a great number of visitors

正确答案:C

答案解析:本题有一定难度，需要认真吃透原文句意，答案依据是文章第二段，…it has an information safety net，谈到癌症闲谈论坛有不一样的地方，就是它的信息来源安全可靠，回来看选项，C项和原文句意相符，是答案。

3、Human Heart Can Make New CellsSolving a longstanding (为时甚久的) mystery, scientists have found that the human heart continues to generate new cardiac(心脏的 ) cells throughout the life span, although the rate of new cell production slows with age.The finding, published in the April 3 issue of Science, could open a new path fｏｒthe treatment of heart diseases such as heart failure ａｎｄ　heart attack, experts say."We find that the beating cells in the heart, cardiomyocytes (心肌细胞), are renewed," said lead researcher Dr. Jonas Frisen, a professｏｒof stem cell research at the Karolinska Institute in Stockholm, Sweden. "It has previously not been known whether we were limited to the cardiomyocytes we are born with ｏｒif they could be renewed," he said.The process of renewing these cells changes over time, Frisen added. In a 20 - year - old, about I percent of cardiomyocytes are exchanged each year, but the turnover (更替) rate decreases with age to only 0.45 percent by age 75."If we can understａｎｄ　how the generation of new cardiomyocytes is regulated, it may be potentially possible to develop pharmaceuticals (药物) that promote this process to stimulate regeneration after, fｏｒexample, a heart attack," Frisen said.That could lead to treatment that helps restore damaged hearts."A lot of people suffer from chronic heart failure," noted co - authｏｒDr. Ratan Bhardwaj, also from the Karolinska Institute. "Chronic heart failure arises from heart cells dying," he said.With this finding, scientists are "opening the doｏｒto potential therapies (疗法) to having ourselves heal ourselves." Bhardwaj said. "Maybe one could devise a pharmaceutical agent that would make heart cells make new ａｎｄ　more cells to overcome the problem they are facing. "But barriers remain. According to Bhardwaj, scientists do not yet know how to increase heart cell production to a rate that would replace cells faster than they are dying off, especially in older patients with heart failure. In addition, the number of new cells the heart produces was estimated using healthy hearts-whether the rate of cell turnover in diseased hearts is the same remains unknown.It is not known yet if the rate of cell turnover in diseased hearts ______.【单选题】

A.is high enough to replace cells faster than they\'re dying off

B.is of any use to researchers

C.is the same as that in healthy hearts

D.changes over time

正确答案:C

答案解析:本题难度不大，答案依据比较明显。带着题干信息词回文章定位，答案依据是文章最后一段最后一句，谈到心脏新细胞的制造数量是按照健康心脏来计算的，但是患病心脏的细胞更新率是否一样还是未知，回来看选项，C项和原文句意相符，是答案。

4、Smallpox virusIt\'s now a fair bet that we will never see the total extinction of the smallpox virus. The idea was to cap the glorious achievement of 1980, when smallpox was eradicated in the wild, by destroying the killer virus in the last two labs that are supposed to have it—one in the US ａｎｄ　one in Russia. If smallpox had truly gone from the planet, what point was there in keeping these reserves?____ reality, of course, it was naive to imagine that everyone would let go of such a potential weapon. Undoubtedly several nations still have a few vials. ａｎｄ　the last “official” stocks of live virus bred mistrust of the US ａｎｄ　Russia, fｏｒno obvious gain.Now American researchers have found an animal model of the human disease, opening the way fｏｒtests on new treatments ａｎｄ　vaccines. So one again there\'s a good reason to keep the virus—just in case the disease puts in a reappearance.How do we deal with the mistrust of the US ａｎｄ　Russia? Simple. Keep the virus under international auspices in a well-guarded UN laboratory that\'s open to all countries. The US will object, of course, just as it rejects a multilateral approach to just about everything. But it doesn\'t mean the idea is wrong. If the virus is useful, then let\'s make it the servant of all humanity—not just a part of it.【单选题】

A.In

B.On

C.At

D.For

正确答案:A

答案解析:此题考查固定搭配。in?reality:?实际上，事实上。故A为正确答案。

5、Gun Rights in the US Immediately after the shooting at Virginia Tech University, Americans gathered to mourn the dead. The president ａｎｄ　the state governｏｒboth hurried there to share the grief. But the majority of Americans still cling to their right to own weapons. Strictly speaking, the US is not the only country ____ gun violence has destroyed lives, families ａｎｄ　communities in everyday circumstance. But the US is one of the few countries that seems unwilling ａｎｄ　politically incapable of doing anything serious to stop it. In countries like Britain ａｎｄ　Canada. The government adopted stricter gun control soon after serious gun violence incidents. US leaders, however, are held hostage by the gun lobby ａｎｄ　the electoral system. The powerful National Rifle Association, the majｏｒsupporter of gun rights in the US, is too strong fｏｒany party to take on. Most Republicans oppose gun controls anyway. Over the years, the Democrats have found that they can either campaign fｏｒgun control ｏｒwin power, not both; they prefer power. According to the US Bureau of Justice Statistics, firearm incidents accounted fｏｒnine percent of the 4.7 million violent crimes in 2005. So, although opinion polls show most Americans want stricter gun laws, many don\'t want to give up their arms they keep to protect themselves. Dave Hancock, a Virginia gun lover, is one example. In an interview he said. "If one professｏｒin Virginia incident had been carrying a legal weapon they might have been able to stop all this. " In his opinion, the massacre is an argument fｏｒmore people to carry, weapons, not fewer. But at the root of Americans\' clinging to the right to bear arms is not just a fear of crime, but a mistrust of government , commented UK\'s Guardian newspaper. One Virginia resident, who had a permit to carry; a concealed firearm, told the Guardian thin itwas every American\'s responsibility to have a gun. "Each person," he said, "should not rely solely on the government fｏｒprotection. " 【单选题】

A.while

B.which

C.where

D.that

正确答案:C

答案解析:从所给的四个选项来看，它们都是从句连词，因而关键要判断出，横线后面是一个什么样的从句，横线前面的句子是说： 美国不是唯一的一个国家…，每天，枪支暴力已经毁灭了许多的生命、家庭和社区。从他们的关系，可以看出，后面的句子是一个定语从句，修饰country，而在后面的句子中，应该是in the country，所以选择关系副词where=in which.